Trifa Kamal Farkha1 & Adil Othman Fatah1
1Faculty of Science and Science education-University of Sulaimani, Kurdistan Region of Iraq
E-mail: [email protected]
Original: 01.07.2015; Revised: 22.10.2015; Accepted:28.01.2016; Published online: 20.06.2016
DOI Link:
ABSTRACT
The Phytoplankton species composition have been studied at eight
stations from four selected streams: Tabin, Charmaga, Chamirezan and
Surqawshan in Dukan basin within
Sulaimani district during August 2010 to July 2011. Some physical and chemical properties
of the streams water were determined. Air and water temperature values were varied between (3 to 43 oC) and (5 to 29
oC) ,respectively. Upon investigation,
the pH range of the sites was 7-9.4 indicating alkalinity of the water bodies. Calcium
concentrations always dominated over the other ions. Calcium values were varied between (10 to 74 mg/l). Sodium and potassium concentration ranged between
(0.66 to 16.5 mg/l) and (0.3 to 3.4 mg/l) respectively. Chloride concentrations never fall below 10
mg/l and never exceed 58 mg/l. throughout the studied period. A total of 136
phytoplankton taxa were identified which
belong to six divisions , the majorities
were belonged to Bacillariophyta (92 taxa), making up 67.65 % of the total,
followed by Chlorophyta (19 taxa),
making up 14.7 %, Cyanophyta (19 taxa) which make up 14 %,( 2 taxa) for
each of Pyrophyta and , Euglenophyta and (1 taxon)
of chrysophyta make up 3.75% . The most
diverse genera that were investigated in this study were: Navicula (13 taxa) ,Nitizschia
(15 taxa),Fragilaria(9 taxa) , Cymbella and Gomphonema (8 taxa).
KEYWORDS
Surface water, Dukan basin, Physico-chemical parameters, Phytoplankton
FULL TEXT:
